rock_paper_scissors.py

from random import randint

hands = ['rock', 'scissors', 'paper']
judgements = ['It is a draw.', 'You lost to a computer!', 'You win I guess.']

while True:
    try:
        user_input = input('Your weapon of choice: ')
        user_choice_index = hands.index(user_input.lower())
    except ValueError:
        print(f'{user_input} is not an accepted weapon!')
        break

    npc_choice_index = randint(0, 2)
    npc_choice_label = hands[npc_choice_index]
    judgement = judgements[user_choice_index - npc_choice_index]

    top_string = f'# The computer played {npc_choice_label}! #'
    top_btm_border = '#' * len(top_string)
    judgement_w_border = f'# {judgement.center(len(top_string) - 4)} #'

    print(top_btm_border)
    print(top_string)
    print(judgement_w_border)
    print(top_btm_border)
    print('\n')